CN107637134A - Radio communication device and wireless communications method - Google Patents
Radio communication device and wireless communications method Download PDFInfo
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- CN107637134A CN107637134A CN201580080535.7A CN201580080535A CN107637134A CN 107637134 A CN107637134 A CN 107637134A CN 201580080535 A CN201580080535 A CN 201580080535A CN 107637134 A CN107637134 A CN 107637134A
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- radio communication
- communication device
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/005—Routing actions in the presence of nodes in sleep or doze mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/28—Connectivity information management, e.g. connectivity discovery or connectivity update for reactive routing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Starting and dormancy is repeated in the radio communication device for forming the multihop network of tree structure, wherein, the radio communication device possesses：Network control unit, it keeps the information that the link of data is sent to other radio communication devices, and generates the link control message for including link information；And wireless transmission acceptance division, it from the adjacent radio communication device in other radio communication devices when receiving following request of data, the link control message that network control unit generates is sent to adjacent radio communication device, the request of data shows the transmission of situation and request data that adjacent radio communication device starts since dormancy, therefore, in the case that the radio communication device for forming multihop network carries out tapping mode, communication link can be also updated.
Description
Technical field
The present invention relates to forming multihop network and carry out the skill of the radio communication device transmission link information of tapping mode
Art.
Background technology
Cost degradation for wireless module and the bandspreading without mandate with frequency restructuring, wireless M2M
(Machine-to-Machine, machine-to-machine) systematic difference extends.Wireless M2M systems are in equipment by radio communication
Between send and receive monitoring information and/or control data system.In wireless M2M systems, due to will with configure extensive
Equipment in region is communicated, and therefore, the extension of communication distance is listed in one of problem.In addition, it is also assumed that it can not ensure
The situation of radio node is set in the environment of power supply, and therefore, the low power consumption that radio node is worked long hours using battery is also
One problem.
As the technology for extending communication distance, multi-hop communication technology as follows be present：Sending source node and target
Via node is configured between addressed nodes, is received using via node from the data for sending source node and sending, then from via node
It is transmitted to destination address node.By applying multi-hop communication technology, without extending the communication distance of Radio Link, it becomes possible to
The communication distance extended between transmission source node and destination address node.As one of multi-hop communication technology, have by ietf standard
RPL (IPv6Routing Protocol for Low Power and Lossy Networks, suitable for low-power consumption after change
With the IPv6 Routing Protocols of lossy networks) (with reference to following non-patent literatures 1).
RPL carries out the renewal of communication link by regularly changing control message.In wireless communications, due to electric wave
Situation at every moment changes, and therefore, regularly link renewal is essential.Each node constructs one using gateway as root
Tree structure multihop network.In the presence of the link (hereinafter referred to as up-link) from this node towards gateway direction and from
Gateway is utilized respectively following means and link is updated towards the link (hereinafter referred to as downlink) of this node direction.
First, the renewal to up-link illustrates.
Up-link information is set as uplink control message by gateway, is regularly transmitted with broadcast mode.Connect
The up-link information that the node of uplink control message keeps this node is received to be updated, and will be upper after renewal
Downlink message is set as uplink control message, is transmitted with broadcast mode.
Fig. 9 is the timing diagram for showing to update up-link.Node A~C in Fig. 9 be present.Node A is adjacent with node B, is section
Point B and node C the next node.Node B is the next node adjacent with node C.
The up-link information that the node C of uplink control message keeps this node is received to be updated, and
Up-link information after renewal is set as uplink control message, is transmitted (S901) with broadcast mode.Node B connects
The uplink control message from node C is received, up-link information is updated (S902).Node B is by the sheet after renewal
The up-link information of node is set as uplink control message, and is transmitted (S903) with broadcast mode.Node A is received
Uplink control message from node B, up-link information is updated (S904).
Next, the renewal to downlink illustrates.
Figure 10 is the timing diagram for showing to update downlink.Node A~C in Figure 10 be present.Node A~C is regularly with list
Broadcast mode sends downlink control messages to adjacent host node.
Node A sends downlink control messages (S1001) with mode of unicast to node B.Receive downlink control
The node B of message is updated (S1002) to downlink information.In addition, node B is by the downlink control of the content after renewal
Message processed is sent to node C (S1003).The node C for receiving downlink control messages is updated to downlink information
(S1004)。
On the other hand, as the technology for realizing low-power consumption, node be present and the tapping mode started with dormancy is repeated.Example
Such as, in IEEE802.15.4e, as the mode of tapping mode, RIP (Receiver Initiated Transmission,
Recipient starts transmission) it has been standardized (with reference to following non-patent literatures 2).
Figure 11 is to show the timing diagram based on the RIP tapping modes carried out.Node A, B in Figure 11 be present.Node A, B are each other
It is adjacent, it is the node for forming multihop network.Starting and dormancy is repeated in node A, B.Node B grasped in advance node A be into
The situation of the node of row tapping mode.
Even if node B receives the data for issuing node A from other nodes, also (S1101) is not forwarded immediately.Node A rises
When dynamic, the request of data (S1102) of request transmission data is sent to adjacent node B.Node B receives data from node A please
When asking, node A data (S1103) are issued.Node A receives data, as to enter dormancy due to intermittent periods it
Timing when carry out dormancy.
Citation
Non-patent literature
Non-patent literature 1:IETF RFC6550,“IPv6Routing Protocol for Low-Power and
Lossy Networks”
Non-patent literature 2:IEEE Std 802.15.4e-2012
The content of the invention
The invention problem to be solved
However, by update mode and non-patent literature 2 of the non-patent literature 1 based on the RPL communication links realized
In the case of being combined based on the RIP tapping modes realized, when node dormancy, exist to receive and sent with broadcast mode
Link control message so as to can not enter downlink message renewal the problem of.
The present invention completes to solve problem as described above, it is therefore intended that obtains even in composition multihop network
Node carrying out also being capable of in the case of tapping mode the radio communication device of more new communication link.
Means for solving the problems
Radio communication device forms the multihop network of tree structure and starting and dormancy is repeated, wherein, the channel radio
T unit possesses：Network control unit, it keeps the information that the link of data is sent to other radio communication devices, and generates and include
The link control message of the information of link；With wireless transmission acceptance division, it is from the adjacent nothing in other radio communication devices
When line communicator receives following request of data, the link control message that the portion of being network controlled generates is sent to adjacent
Radio communication device, the request of data show the situation that the adjacent radio communication device has started since dormancy and request
The transmission of data.
Invention effect
, also can be right in the case that the node for forming multihop network carries out tapping mode according to the present invention
Communication link is updated.
Brief description of the drawings
Fig. 1 is the block diagram of the structure for the network for showing embodiment 1.
Fig. 2 is the block diagram of the structure for the node for showing embodiment 1.
Fig. 3 is the flow chart of the flow of the reception processing for the node for showing embodiment 1.
Fig. 4 is the flow chart of the flow of the transmission processing for the node for showing embodiment 1.
Fig. 5 is the timing diagram of the up-link for the more new node for showing embodiment 1.
Fig. 6 is the timing diagram of the downlink for the more new node for showing embodiment 1.
Fig. 7 is the block diagram of one of the hardware configuration for the node for showing embodiment 1.
Fig. 8 is the flow chart of the processing for the network control unit renewal link for showing embodiment 2.
Fig. 9 is the timing diagram for showing to update up-link.
Figure 10 is the timing diagram for showing to update downlink.
Figure 11 is to show the timing diagram based on the RIP tapping modes realized.
Embodiment
Embodiment 1.
First, the network structure of the present invention is illustrated.
Fig. 1 is the figure of the structure for the network for showing embodiment 1.Network is by the node 10a as radio communication device
The multihop network that~c and gateway 11 are formed.In addition, Fig. 1 network is the network for the tree structure of root with gateway 11.Gateway 11
Construct network and be managed, data are sent and received directly with node or via other nodes and node.In addition, gateway
11 and be connected to gateway 11 upper device and/or other networks between send and receive data.
It is up from node towards the direction of gateway 11, is descending from gateway 11 towards the direction of node.In Fig. 1, structure
Build the link being connected from gateway 11 via other nodes with node 10a, node 10b, node 10c.Node 10a is node
10b and node 10c the next node.Node 10b is both node 10c the next node, is node 10a host node again.Section
Point c is node a and node b host node.In addition, node 10a~c carries out tapping mode.
Next, the structure of node 10 is illustrated.Node 10a~c is and the identical structure of node 10.
Fig. 2 is the block diagram of the structure for the node 10 for showing embodiment 1.
Node 10 by antenna 21, wireless transmission acceptance division 22, application data transmission and reception unit 23, network control unit 24 and
Control unit 25 of having a rest is formed.In addition, network control unit 24 is made up of up-link management department 26 and downlink management department 27.This
Outside, tapping mode portion 25 is made up of node administration portion 28 and starting management department 29.Sometimes node 10 is connected with sensor, using number
The data between sensor are carried out according to transmission and reception unit 23 to send and receive.
First, the situation that data are received to node 10 illustrates.
Wireless signal is exported when receiving wireless signal from other nodes and gives wireless transmission acceptance division 22 by antenna 21.
Wireless signal is converted to frame by wireless transmission acceptance division 22, and the destination address of frame is confirmed.In frame, as target
Location, be set with network address and MAC Address both.Network address is the destination address for the data that frame is sent.MAC Address is to show
The destination address of the next node gone out in multi-hop link.As long as network address and MAC Address can uniquely identify node
Value.In addition, for transmission source, also in the same manner as destination address, it is set with frame and sends source network address and transmission
Source MAC.
Content of the acceptance division 22 according to the frame data to be sent is transmitted wirelessly, to application data transmission and reception unit 23 or network
Control unit 24 is exported.From application data transmission and reception unit 23 is carried out to the application data inputted from wireless transmission acceptance division 22
Reason.When have input link control message from wireless transmission acceptance division 22, network control unit 24 is updated to link information.
Up-link management department 26 by the MAC Address of host node, class information, next node MAC Address and chain
The period of validity of road information, which is mapped, to be kept.Class information refers to represent gateway 11 to the value of the distance of node.Distance
Such as represented with hop count.Hop count be untill the node of destination address via node number.Next node
MAC Address is the next node on link when issuing the data of host node, is the node adjacent with node 10.On
Line link management department 26 preserves MAC Address of the transmission source MAC of uplink control message as next node.It is upper
The period of validity of the MAC Address of node, class information and link information is the value notified by uplink control message.
In addition, downlink management department 27 by the MAC Address of the next node, class information, next node MAC Address
It is mapped and is kept with the period of validity of link information.Next node is chain when issuing the data of the next node
Next node on road, it is the node adjacent with node 10.Downlink management department 27 preserves downlink control messages
Send MAC Address of the source MAC as next node.The MAC Address of the next node, class information and link information have
The effect time limit is the value notified by downlink control messages.
Up-link management department 26 and downlink management department 27 maintain the link information of multiple nodes sometimes.
Node administration portion 28 by the MAC Address of adjacent node and each node whether carrying out tapping mode be mapped into
Row is kept.When node adds network, by the MAC Address of this node and the node that tapping mode is sent to surrounding whether is carried out.
Node administration portion 28 will appreciate that whether adjacent node carries out tapping mode according to information at this moment.
In addition, start the resting period that management department 29 keeps this node.
Next, the situation that data are sent to node 10 illustrates.
Application data transmission and reception unit 23 is defeated by the generated application data of the sensor being connected with node 10 and/or application
Go out and give wireless transmission acceptance division 22.Network control unit 24 is and attached with reference to up-link management department 26 or downlink management department 27
Add the information of this node and generate link control message.MAC Address, class information of the uplink control message by host node
Formed with the period of validity of link.Network control unit 24 sets the MAC Address of this node in the MAC Address of host node, makees
For the link information of this node.Network control unit 24 maintains the class information of this node and the period of validity of link, and to upper
Downlink control message sets kept value.Network control unit 24 is by the uplink control message generated and next section
The MAC Address of point, which exports, gives wireless transmission acceptance division 22.
Downlink control messages are made up of the period of validity of the MAC Address of the next node, class information and link.Network
Control unit 24 sets the MAC Address of this node in the MAC Address of the next node, the link information as this node.Network control
Portion 24 processed maintains the class information of this node and the period of validity of link, and downlink control messages setting is kept
Value.Network control unit 24 exports the MAC Address of the downlink control messages generated and next node to wireless transmission
Acceptance division 22.
Wireless transmission acceptance division 22 inquires whether next node carries out tapping mode to node administration portion 28.Under
In the case that one node carries out tapping mode, wireless transmission acceptance division 22, which is worked as from next node, receives request of data
When, link control message and application data are sent to next node via antenna 21.Do not enter in the ranks in next node
Have a rest in the case of control, wireless transmission acceptance division 22 be not to wait for the reception of request of data and by link control message and application data
It is sent to next node.
Next, the details for receiving the action of data from other nodes to node 10 illustrates.
Fig. 3 is the flow chart of the flow of the reception processing for the node 10 for showing embodiment 1.
Acceptance division 22 is transmitted wirelessly when receiving wireless signal from antenna 21, from step S301 start to process.
In step S301, whether the wireless transmission data to be sent to frame of acceptance division 22 are to issue this section point to sentence
It is fixed.In the case where the destination network addresses of frame are this node, processing is set to advance to step S302.
In step s 302, transmit wirelessly whether the data to be sent to frame of acceptance division 22 are that application data judges.
In the case where the data that frame to be sent are application data, application data is exported and sent out to application data by wireless transmission acceptance division 22
Send acceptance division 23.
In step S303, application data transmission and reception unit 23 is handled the application data inputted.Application data
Transmission and reception unit 23 sometimes also further gives data output the sensor of this node connection.Processing terminates.
In step s 302, in the case where the frame data to be sent not are application data, processing advances to step S304.
In step s 304, in the case where the frame data to be sent are link control message, acceptance division 22 is transmitted wirelessly
Link control message is exported to network control unit 24.
In step S305, network control unit 24 is updated to link information.It is being the link related to up-link
In the case of control message, link information is stored in up-link management department 26 by network control unit 24.It is being and descending chain
In the case of the related link control message in road, link information is stored in downlink management department 26 by network control unit 24.
Processing terminates.
In step s 304, in the case where the frame data to be sent not are link control message, acceptance division is transmitted wirelessly
22 carry out processing corresponding with the content of message, and processing terminates.
In step S301, in the case where the destination network addresses of frame are not this node, processing is set to advance to step
S306.This is the situation for forwarding a frame to other nodes.
In step S306, in the case where the destination-mac address of frame is this node, processing is set to advance to step S307.
In step S307, wireless transmission acceptance division 22 gives the data forwarding received from other nodes to next section
Point.The details of processing repeats after holding.
In step S306, in the case where the destination-mac address of frame is not this node, step S311 is advanced to.
In step S311, wireless transmission acceptance division 22 abandons frame.Processing terminates.
Next, the details for sending the action of data to other nodes to node 10 illustrates.
Fig. 4 is the flow chart of the flow of the transmission processing for the node 10 for showing embodiment 1.Node 10 sends the number of generation
According to the situation of data that is received from other nodes of situation and forwarding, carry out the processing of this flow chart.Forward from other
The situation for the data that node receives, it is Fig. 3 step S307.
Application data transmission and reception unit 23 utilizes corresponding with the input from sensor and/or the application data received
Processing, other nodes are sent to by application data.Application data transmission and reception unit 23 is defeated by application data and destination network addresses
Go out and give wireless transmission acceptance division 22.
Acceptance division 22 is transmitted wirelessly when being transfused to the data sent by application data transmission and reception unit 23, from step S401
Start to process.
In step S401, wireless transmission acceptance division 22 exports destination network addresses to network control unit 24, and inquiry
Next node.Network control unit 24 exports the MAC Address of next node corresponding with destination network addresses to wireless hair
Send acceptance division 22.The destination network addresses inputted from application data transmission and reception unit 23 are set as frame by wireless transmission acceptance division 22
Destination network addresses.In addition, acceptance division 22 is transmitted wirelessly by the MAC Address of the next node inputted from network control unit 24
It is set as the destination-mac address of frame.
In step S402, wireless transmission acceptance division 22 exports the MAC Address of next node to tapping mode portion 25,
And whether inquiry next node carries out tapping mode.Tapping mode portion 25 is with reference to node administration portion 28, by next section
Whether point, which is in tapping mode to export, is given wireless transmission acceptance division 22.In the situation that next node is in tapping mode
Under, processing is advanced to step S403.In addition, in the case where next node is not in tapping mode, processing is set to advance
To step S404.
In step S403, when wireless transmission acceptance division 22 receives request of data from next node or keeps hair
When sending the timer expired of data, processing is set to advance to step S404.
In step s 404, the transmission source MAC of request of data is exported and controlled to network by wireless transmission acceptance division 22
Portion 24.In the case where the transmission source node of request of data is the node of up-link, network control unit 24 generates up-link
Control message and export acceptance division 22 to wireless transmission.The data division that acceptance division 22 is transmitted wirelessly in frame sets up-link control
Message processed, converts the frames into wireless signal.Wireless transmission acceptance division 22 transmits radio signals to next section via antenna 21
Point.
In the case where the transmission source node of request of data is the node of downlink, network control unit 24 generates descending chain
Road control message and export acceptance division 22 to wireless transmission.Transmit wirelessly acceptance division 22 it is same with uplink control message
Ground is sent to next node.Processing advances to step S405.
In step S405, wireless transmission acceptance division 22 with setting the MAC of next node in the destination-mac address of frame
Location, and set application data in the data division of frame.In addition, wireless transmission acceptance division 22 converts the frames into wireless signal and exported
To antenna 21.Antenna 21 transmits radio signals to next node.Processing terminates.
In addition, wireless transmission acceptance division 22 is from adjacent node when receiving request of data, oriented this is adjacent not keeping
In the case of the application data that node is sent, only transmission link control message.At this moment, wireless transmission acceptance division 22 can also sent out
Send information that the situation for representing not maintain the application data to be sent is added in the frame of link control message and to adjacent node
It is transmitted.
Next, the action for updating up-link is illustrated.In addition, for the purpose of simplifying the description, based on device name
Action is illustrated.
Fig. 5 is the timing diagram of the up-link for the more new node 10b for showing embodiment 1.
Node 10b receives the data (S501) for issuing node 10a.Node 10b node administration portion 28 to node 10a whether
It is that the node for carrying out tapping mode is judged.Because node 10a carries out tapping mode, therefore node 10b postpones to node 10a
The transmission (S502) of progress.Node 10a sends request of data when end dormancy starts.Node 10b is received from node
During 10a request of data, to the inquiry node 10a of up-link management department 26 whether be up-link node (S503).If
Node 10a is the node of up-link, then node 10b sends uplink control message with mode of unicast to node 10a
(S504).Node 10a is updated according to the uplink control message received from node 10b to up-link information
(S505).When node 10b receives when being sent to confirmation of uplink control message, the data once postponed are transmitted
(S506).Node 10a receives data, when as intermittent periods it, carries out dormancy.
When receiving request of data from node 10a in the absence of node 10a postponement data are issued in the case of, node
10b can also express in the absence of the situation for postponing data in uplink control message and is transmitted to node 10a.Pass through
Data can be not to wait for and go to dormancy in the absence of the situation for postponing data, node 10a by expressing in uplink control message
State.Thus there is the effect for reducing power consumption.
In addition, node 10b can also be sent to node 10a uplink control message with broadcast mode to send.Pass through
Broadcast, the node of surrounding can also obtain the information of up-link and fresh information.
Next, the action for updating downlink is illustrated.In addition, for the purpose of simplifying the description, based on device name
Action is illustrated.
Fig. 6 is the timing diagram of the downlink for the more new node 10b for showing embodiment 1.
Node 10b receives the data (S601) for issuing node 10c.Node 10b node administration portion 28 to node 10c whether
It is that the node for carrying out tapping mode is judged.Because node 10c carries out tapping mode, therefore node 10b postpones to node 10c
The transmission (S602) of progress.Node 10c sends request of data when end dormancy starts.Node 10b is received from node
During 10c request of data, to the inquiry node 10c of downlink management department 27 whether be downlink node (S603).If
Node 10c is the node of downlink, then node 10b sends downlink control messages with mode of unicast to node 10c
(S604).Node 10c is updated according to the downlink control messages received from node 10b to downlink information
(S605).When node 10b receives when being sent to confirmation of downlink control messages, the data once postponed are transmitted
(S606).Node 10c receives data, when as intermittent periods it, carries out dormancy.
Next, the hardware configuration of node 10 is illustrated.
Fig. 7 is the block diagram of one of the hardware configuration for the node 10 for showing embodiment 1.
Node 10 is made up of memory 71, processor 72 and Wireless Telecom Equipment 73.Wireless Telecom Equipment 73 and antenna
21 connections.
Memory 71 is stored with for realizing wireless transmission acceptance division 22, application data transmission and reception unit 23, network control
The program and data of each function in portion 24 and tapping mode portion 25.In addition, memory 71 is also stored with for realizing up-link
Management department 26, downlink management department 27, node administration portion 28 and start management department 29 each function data.Memory is for example
By ROM (Read Only Memory, read-only storage), RAM (Random Access Memory, random access memory),
HDD (Hard Disk Drive, hard disk drive), SSD (Solid State Drive, solid state hard disc) are formed.
Processor 72 reads the program being stored in memory 71 and data and realizes wireless transmission acceptance division 22, using number
According to transmission and reception unit 23, network control unit 24 and each function in tapping mode portion 25.Processor 72 is stored in storage by performing
The process circuits such as the CPU of the program in device, system LSI (Large Scale Integration, large scale integrated circuit) come real
It is existing.
Alternatively, it is also possible to be configured to be cooperated by multiple process circuits to perform wireless transmission acceptance division 22, application data hair
Send the function of acceptance division 23, network control unit 24 and tapping mode portion 25.
Wireless Telecom Equipment 73 together realizes the function of wireless transmission acceptance division 22 with memory 71 and processor 72.Nothing
Line communication equipment 73 is made up of wireless transmission device and radio receiver, by between wireless mode and other devices send and
Receive wireless signal.
Therefore, in the present embodiment, starting is repeated in the radio communication device for forming the multihop network of tree structure
And dormancy, the radio communication device have：Network control unit, it keeps the link to other radio communication devices transmission data
Information, and generate the link control message for including link information；And wireless transmission acceptance division, it is filled from other radio communications
When adjacent radio communication device in putting receives following request of data, link control message that network control unit is generated
Adjacent radio communication device is sent to, wherein, the request of data shows adjacent radio communication device since the dormancy
Dynamic situation and request sends data, therefore, tapping mode is carried out even in the radio communication device for forming multihop network
In the case of, communication link can be also updated.
Embodiment 2.
In embodiment 1 more than, this case that request of data up-link control is sent for opportunity to receive
Message or downlink control messages, still, in the present embodiment, the period of validity in view of communication link is shown and sent
The embodiment of link control message.
In addition, in the present embodiment, a pair part different from embodiment 1 illustrates.
Fig. 8 is that the network control unit 24 for showing embodiment 2 updates the flow chart of the processing of link information.
Network control unit 24 obtains the period of validity of up-link and the term of validity of downlink from link control message
Limit, and be stored in respectively in up-link management department 26 and downlink management department 27.
Node 10 is from step S801 start to process.
In step S801, network control unit 24 starts up-link timer and downlink timer.Timer value
Start from scratch and count up.
In step S802, wireless transmission acceptance division 22 receives request of data.Acceptance division 22 is transmitted wirelessly by request of data
The transmission source MAC of frame is exported to network control unit 24.It is the situation of the node of up-link in the transmission source of request of data
Under, advance to step S804.
In step S803, network control unit 24 is by the value of up-link timer compared with threshold value.Work as uplink
When the value of road timer is less than threshold value, step S805 is advanced to.When the value of up-link timer is not less than threshold value, it is back to
Step S802.
In step S804, network control unit 24, which generates uplink control message and exported, gives wireless transmission acceptance division
22.Wireless transmission acceptance division 22 sends uplink control message via antenna 21 with mode of unicast.
In step S805, network control unit 24 makes the value of up-link timer reset and be set as zero.Processing returns
To step S802.
In step S802, in the case where the transmission source of request of data is the node of downlink, step is advanced to
S806。
In step S806, by the value of downlink timer compared with threshold value.When the value of downlink timer
During less than threshold value, step S807 is advanced to.When the value of downlink timer is not less than threshold value, step S802 is back to.
In step S807, network control unit 24, which generates downlink control messages and exported, gives wireless transmission acceptance division
22.Wireless transmission acceptance division 22 sends downlink control messages via antenna 21 with mode of unicast.
In step S808, network control unit 24 makes the value of downlink timer reset and be set as zero.Processing returns
To step S802.
Threshold value compared with up-link timer and downlink timer is set to the interval control of this node
N times of the value in cycle processed.The tapping mode cycle is to start to proceed by time of the dormancy untill starting again from node.n
For the integer more than or equal to 1.
By the way that threshold value to be set to n times of the value in tapping mode cycle, thus untill the period of validity time-out of link, energy
Enough send n up-link and downlink control messages.When setting n as 1, if the transmission failure one of link control message
It is secondary, then cause the period of validity time-out of link, the renewal failure of link.On the other hand, when n being set into larger, link control
The transmission interval of message shortens, so as to cause the portfolio of wireless network to increase, the power consumption increase of node.Therefore, by appropriate
Ground sets n, can reduce the failure of link renewal, additionally it is possible to suppresses the portfolio increase of wireless network and the power consumption of node increases
Add.
Therefore, in the present embodiment, when network control unit is to link control message is exported to wireless transmission acceptance division
Rise elapsed time counted, when receiving request of data from adjacent radio communication device elapsed time be less than threshold
During value, acceptance division not transmission link control message is transmitted wirelessly, therefore, can be right untill the period of validity time-out of link
Link is updated.
Label declaration
10th, 10a~c：Node；
11：Gateway；
21：Antenna；
22：Transmit wirelessly acceptance division；
23：Application data transmission and reception unit；
24：Network control unit；
25：Tapping mode portion；
26：Up-link management department；
27：Downlink management department；
28：Node administration portion；
29：Start management department；
71：Memory；
72：Processor；
73：Wireless Telecom Equipment.
Claims (5)
1. a kind of radio communication device, the radio communication device form the multihop network of tree structure and be repeated starting and
Dormancy, it is characterised in that the radio communication device has：
Network control unit, it keeps the information that the link of data is sent to other radio communication devices, and generates and include institute
State the link control message of the information of link；And
Transmit wirelessly acceptance division, its received from the adjacent radio communication device in other radio communication devices it is as follows
Request of data when, the link control message generated by the network control unit is sent to the adjacent radio communication
Device, the request of data show the situation that the adjacent radio communication device has started since dormancy and request data
Send.
2. radio communication device according to claim 1, it is characterised in that
The wireless transmission acceptance division does not maintain when receiving the request of data from the adjacent radio communication device
In the case of the data to be sent to the adjacent radio communication device, transmission, which is attached with, shows that the data to be sent are not present
Information the link control message.
3. radio communication device according to claim 1 or 2, it is characterised in that
From when the network control unit by the link control message to being sent to the adjacent radio communication device by
Time is counted,
When receiving the request of data from the adjacent radio communication device, the elapsed time is less than threshold value, institute
State wireless transmission acceptance division and do not send the link control message.
4. radio communication device according to claim 3, it is characterised in that
The radio communication device has tapping mode portion, and the tapping mode portion is kept for the tapping mode cycle of the present apparatus, and
The tapping mode of the present apparatus is carried out,
The threshold value is set as n times of the value in the tapping mode cycle of the present apparatus by the network control unit, wherein, n is just whole
Number.
5. a kind of wireless communications method, the wireless communications method is used for the multihop network for forming tree structure, and has been repeated
Dynamic and dormancy, wherein, the wireless communications method includes：
Network rate-determining steps, keep sending the information of the link of data to other radio communication devices, and generate and include the chain
The link control message of the information on road；And
Receiving step is transmitted wirelessly, it is as follows being received from the adjacent radio communication device in other radio communication devices
Request of data when, the link control message generated by the network control unit is sent to the adjacent radio communication
Device, the request of data show the situation that the adjacent radio communication device has started since dormancy and request data
Send.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/066229 WO2016194205A1 (en) | 2015-06-04 | 2015-06-04 | Wireless communication apparatus and wireless communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107637134A true CN107637134A (en) | 2018-01-26 |
| CN107637134B CN107637134B (en) | 2019-05-17 |
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| CN201580080535.7A Active CN107637134B (en) | 2015-06-04 | 2015-06-04 | Wireless communication device and wireless communications method |
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|---|---|
| JP (1) | JP6218993B2 (en) |
| CN (1) | CN107637134B (en) |
| DE (1) | DE112015006595B4 (en) |
| TW (1) | TWI586204B (en) |
| WO (1) | WO2016194205A1 (en) |
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| JP2018124774A (en) * | 2017-01-31 | 2018-08-09 | 東京瓦斯株式会社 | Wireless communication system |
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| US9232539B2 (en) * | 2012-02-20 | 2016-01-05 | Mitsubishi Electric Corporation | Communication system, communication terminal, and communication method |
| US8693322B2 (en) * | 2012-02-21 | 2014-04-08 | Yikun Zhang | Routing method for a wireless multi-hop network |
| KR20130113110A (en) | 2012-04-05 | 2013-10-15 | 한국전자통신연구원 | Expansion method of routing protocol for m2m services in wireless mesh network |
| WO2015006636A1 (en) * | 2013-07-12 | 2015-01-15 | Convida Wireless, Llc | Neighbor discovery to support sleepy nodes |
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2015
- 2015-06-04 DE DE112015006595.4T patent/DE112015006595B4/en active Active
- 2015-06-04 CN CN201580080535.7A patent/CN107637134B/en active Active
- 2015-06-04 JP JP2017521456A patent/JP6218993B2/en active Active
- 2015-06-04 WO PCT/JP2015/066229 patent/WO2016194205A1/en active Application Filing
- 2015-06-16 TW TW104119360A patent/TWI586204B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007020941A1 (en) * | 2005-08-18 | 2007-02-22 | Nec Corporation | Communication terminal and communication path control method in wireless multi-hop network |
| CN101039507A (en) * | 2006-03-14 | 2007-09-19 | 华为技术有限公司 | Method and apparatus for establishing and releasing tunnel in evolution network framework |
| CN101267240A (en) * | 2007-03-15 | 2008-09-17 | 华为技术有限公司 | Multi-hop wireless relay communication system and download data transmission method and device |
| JP2009302694A (en) * | 2008-06-11 | 2009-12-24 | Hitachi Ltd | Radio communication network system |
| CN104205993A (en) * | 2012-01-26 | 2014-12-10 | 松下电器（美国）知识产权公司 | Improved discontinuous reception operation with additional wake up opportunities |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112015006595B4 (en) | 2019-02-21 |
| JPWO2016194205A1 (en) | 2017-10-19 |
| TW201644314A (en) | 2016-12-16 |
| JP6218993B2 (en) | 2017-10-25 |
| CN107637134B (en) | 2019-05-17 |
| TWI586204B (en) | 2017-06-01 |
| DE112015006595T5 (en) | 2018-03-15 |
| WO2016194205A1 (en) | 2016-12-08 |
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